*{box-sizing:border-box}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#f8fafc;margin:0;color:#0f172a}
a{color:#0f172a;text-decoration:none}
a:hover{text-decoration:underline}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0}
.brand{font-weight:800;letter-spacing:.3px}
.toplinks a{margin-left:14px;font-size:14px}
.toplinks .muted{color:#64748b}
.wrap{max-width:1100px;margin:0 auto;padding:18px}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px;margin-bottom:14px;box-shadow:0 1px 0 rgba(15,23,42,.02)}
h1,h2,h3{margin:0 0 10px 0}
h1{font-size:20px}
h2{font-size:18px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.col{flex:1;min-width:240px}
label{font-size:12px;color:#475569;display:block;margin-bottom:6px}
input,select,textarea{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:10px;background:#fff}
textarea{min-height:90px}
.btn{display:inline-block;padding:10px 12px;border-radius:10px;border:1px solid #cbd5e1;background:#f1f5f9;font-weight:700;font-size:14px;cursor:pointer}
.btn.primary{background:#0f172a;color:#fff;border-color:#0f172a}
.btn.danger{background:#fee2e2;border-color:#fecaca}
.btn.small{padding:7px 10px;font-size:13px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid #e2e8f0;text-align:left;font-size:14px;vertical-align:top}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;border:1px solid #cbd5e1;font-size:12px;color:#334155;background:#f8fafc}
.badge.draft{background:#f1f5f9}
.badge.sent{background:#dbeafe;border-color:#bfdbfe}
.badge.paid{background:#dcfce7;border-color:#bbf7d0}
.badge.overdue{background:#fee2e2;border-color:#fecaca}
.badge.void{background:#e2e8f0;border-color:#cbd5e1}
.muted{color:#64748b}
.hr{height:1px;background:#e2e8f0;margin:12px 0}
.items th{font-size:12px;color:#64748b}
.thumb{width:84px;height:84px;object-fit:cover;border-radius:10px;border:1px solid #e2e8f0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.note{font-size:13px;color:#475569}